نتایج جستجو برای: aging time

تعداد نتایج: 1980703  

2015
Tomasz F. Wrycza Trifon I. Missov Annette Baudisch

In Biodemography, aging is typically measured and compared based on aging rates. We argue that this approach may be misleading, because it confounds the time aspect with the mere change aspect of aging. To disentangle these aspects, here we utilize a time-standardized framework and, instead of aging rates, suggest the shape of aging as a novel and valuable alternative concept for comparative ag...

In this research, zeolite Na-Y was synthesized from Kaolin without an organic template under the non-hydrothermal condition to adsorb sulfur compound. Model fuel desulfurization was optimized by employing the Box-Behnken experimental design with 2 center points, the three parameters, and one response value. The objective was to find how sorption capacity is related to alkali fusion temperat...

Journal: :modares journal of medical sciences: pathobiology 2014
saeideh nouri mansoureh movahedin zohreh mazaheri

objective: oxidative stress as a consequence of aging can induce infertility in males. in this study, we have investigated the effects of aging on sperm parameters, intra-spermatic water soluble antioxidants, reactive oxygen species (ros), and in vitro blastocyst formation. methods: we chose 5 older nmri male mice (10-12 months) and 5 younger nmri male mice (2-3 months). sperm parameters, ros, ...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی استان فارس - دانشکده دندانپزشکی 1387

چکیده ندارد.

Journal: :iranian red crescent medical journal 0
majid rahimi department of gerontology, university of social welfare and rehabilitation sciences, tehran, ir iran reza fadayevatan iranian research center of aging, department of gerontology, university of social welfare and rehabilitation sciences, tehran, ir iran; iranian research center of aging, department of gerontology, university of social welfare and rehabilitation sciences, tehran, ir iran. tel: +98-2122180004 heidar ali abedi department of nursing midwifery, islamic azad university, isfahan branch, khorasghan, ir iran

background the use of long-term care services has risen and this trend is expected to continue as the population reaches old age. objectives this study was performed to assess the caring conditions in nursing homes. patients and methods this study was conducted with a qualitative approach using conventional qualitative content analysis. the study was conducted on 23 iranian participants includi...

Journal: :acta medica iranica 0
mojgan asadi osteoporosis research center and endocrinology and metabolism research center, endocrinology and metabolism clinical sciences institute, tehran university of medical sciences, tehran, iran. and endocrinology and metabolism research center, endocrinology and metabolism clinical sciences institute, tehran university of medical sciences, tehran, iran. zahra jouyandeh obesity and eating habit research center, endocrinology and metabolism molecular -cellular sciences institute, tehran university of medical sciences, tehran, iran. farnaz nayebzadeh general physician ,tehran women general hospital, tehran university of medical science, tehran, iran. mostafa qorbani department of public health, alborz university of medical sciences, karaj, iran. and non-communicable diseases research center, endocrinology and metabolism population sciences institute, tehran university of medical sciences, tehran, iran.

vitamin d deficiency is the most under-diagnosed medical condition in postmenopausal women. there are few epidemiologic studies on vitamin d status of postmenopausal women in iran. this study aimed to investigate the 25-hydroxyvitamin d levels in postmenopausal women living in tehran, capital of iran. in this cross sectional study, 110 women were selected via convenience sampling method from me...

Journal: :iranian biomedical journal 0
محمد علی پهلوانی mohammad a. pahlavani

the immune system of mammalian organisms undergoes alterations that may account for an increased susceptibility to certain infections, autoimmune diseases, or malignancies. well characterized are age related defect in t cell functions and cell mediated immunity. although it is well established that the functional properties of t cells decrease with age, its biochemical and molecular nature is p...

Journal: :پوست و زیبایی 0
حامد مهدی زاده دانشجوی دکترای انفورماتیک پزشکی، دانشکده ی پیراپزشکی، دانشگاه علوم پزشکی شهید بهشتی نفیسه اسماعیلی مرکز تحقیقات بیماری های اتوایمیون تاولی، بیمارستان رازی، دانشگاه علوم پزشکی تهران کامبیز بهاء الدین بیگی مرکز تحقیقات انفورماتیک پزشکی، پژوهشکده آینده پژوهی در سلامت، دانشگاه علوم پزشکی کرمان عباس کریمی مرکز تحقیقات بیماری های اتوایمیون تاولی، بیمارستان رازی، دانشگاه علوم پزشکی تهران

age related skin disorders due to structural and functional changes in the skin of the elderly may increase health care costs. as a result of an increase in the number of aging population in iran, provision of dermatology services to the elderly group due to the limitation of resources and the high cost of those services will be a challenge for the health care system. moreover, by increasing th...

Journal: :nephro-urology monthly 0
elmira mostafidi department of pathology, imam reza hospital, tabriz university of medical sciences, tabriz, ir iran; kidney research center, tabriz university of medical sciences, tabriz, ir iran akbar moeen faculty of sport sciences, science and research branch, islamic azad university, tehran, ir iran hamid nasri department of nephrology, alzahra hospital, isfahan university of medical sciences, isfahan, ir iran amir ghorbani hagjo department of biochemistery, faculty of medicine, tabriz university of medical sciences, tabriz, ir iran mohammadreza ardalan kidney research center, tabriz university of medical sciences, tabriz, ir iran; kidney research center, tabriz university of medical sciences, tabriz, ir iran. tel: +98-9141168518, fax: +98-4133366579

conclusions regular aerobic exercise could increase plasma klotho levels, and this could be an explanation for exercise-related anti-aging effects. background klotho is an anti-aging protein that is predominantly secreted by the kidneys. objectives the aim of the study was to measure and compare the circulating klotho levels in the serum of trained athletes and in healthy, non-athlete controls....

Abdur Rahman, Serajul Haque,

The effect of the milling time & ageing on the hardness, density, and wear characteristics of Al 7150 alloy specimens made via powder metallurgy has been studied. The different constituents of Al 7150 alloy were processed in a planetary ball milling set up with a BPR of 10:1 for 5 hours, 10 hours, and 20 hours. At 400 °C, the milled powders were subsequently hot compacted in a punch die setup. ...

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